Choosing Low- and No-Calorie Sweeteners: Dietary Guidance, Sensory, Health, and Safety Considerations

You are reformulating a product. Sugar has to come out. Now you face a shelf of sweeteners, each with a different sweetness profile, energy value, and digestive tolerance. Where do you start?

Sugar is under pressure

The global push against excessive sugar consumption has changed how health organizations, policy bodies, and consumers view sweeteners. The public no longer accepts excess sugar as unavoidable. This puts formulators and buyers in the middle. You must cut sugar without cutting taste. A review published in Nutrients (DOI: 10.3390/nu17050793) lays out the dietary guidance, sensory, health, and safety considerations for choosing low-calorie and no-calorie sweeteners.

What the paper covers

The review does not simply rank sweeteners. It connects the biology of sweet taste to practical formulation constraints. That matters because a sweetener that works in a beverage may fail in a cake. Some ingredients provide bulk. Some act only on sweetness. Others behave like sugar only under specific conditions. The paper sorts through that complexity.

Key evidence on the main players

The paper identifies two commercially viable rare sugars: D-allulose and D-tagatose. Their sweetening power and calorie loads differ substantially.

D-allulose delivers about 70% of sucrose's sweetness. It carries only 0.4 kcal/g. The body metabolizes it very little, and it does not raise blood glucose. It also has good heat stability, so formulators can use it in cooking and baking.

D-tagatose comes closer to sugar. It is about 92% as sweet as sucrose but provides 1.5 kcal/g. That is not zero-calorie. Still, it offers a sweetness profile close to table sugar, which can reduce the need for complex sweetener blends.

Sugar alcohols sit in their own category. Erythritol, mannitol, sorbitol, glucitol, and xylitol occur naturally in fruits and vegetables. They also come with defined intake limits. Exceed them, and laxative effects can appear. You cannot treat polyols as buy-in-bulk sugar substitutes.

Sweetener	Sweetness vs sucrose	Energy (kcal/g)	Key processing/tolerance facts
D-allulose	~70%	0.4	Minimal metabolism; no glycemic impact; heat-stable
D-tagatose	~92%	1.5	Commercially viable rare sugar; closer to sugar sweetness
Sugar alcohols (erythritol, mannitol, sorbitol, glucitol, xylitol)	varies	varies	Naturally occurring; defined intake limits; excess can cause laxative effects

What this means for manufacturers

Start with the delivery system. If your product needs high heat, allulose has the thermal stability to handle it. But you will need to boost sweetness elsewhere because allulose tops out around 70% of sucrose. Pair it with another sweetener or adjust flavor to make up the difference.

If you want the sweetness of sugar with less work, tagatose brings you close. Yet at 1.5 kcal/g, it is not a free pass on calories. It still lowers the energy load, but it will not let you claim zero. Choose tagatose when sweetness match matters more than calorie floor.

For polyols, respect the dose. The natural origin does not make them free from side effects. Buyers should ask suppliers for the maximum recommended use levels in each target market. Formulators need to layer those limits into the recipe from the start, not after the first consumer complaint.

Common questions

Can I use allulose in baked goods?

Yes. The paper notes allulose has good heat stability, so it holds up during cooking and baking. It still only hits 70% of sucrose's sweetness, so you may need to top up with another sweetener or adjust sweetness intensity.

Why do sugar alcohols cause digestive issues?

They have defined intake limits. If too much reaches the gut at once, laxative effects can occur. That is why you cannot swap sugar for a polyol gram-for-gram without checking the limit for that specific ingredient.

Does tagatose behave like sugar?

Closer than allulose. At 92% of sucrose's sweetness, it provides a full sugary taste. But at 1.5 kcal/g, it carries more calories than allulose's 0.4 kcal/g. Calculate your label from the actual energy value, not from taste alone.

The sweetener decision is never one-number math. You have to balance sweetness, calories, heat stability, and digestive tolerance. That is what the review makes clear. The next time you brief a supplier, bring those four criteria to the table. They will drive every formula choice you make.